BT8954 CONEXANT [Conexant Systems, Inc], BT8954 Datasheet - Page 22

• Manufacturer Part Number: BT8954
• Description: VOICE PAIR GAIN FRAMER
• Manufacturer: CONEXANT [Conexant Systems, Inc]

2.0 Pin Descriptions
Table 2-1. Hardware Signal Definitions (4 of 4)
2-6
TDI
TMS
TDO
TCK
VDD
GND
PLL_VDD
PLL_GND
Pin Label
Number
Pin
17,
27,
53,
18,
26,
52,
41
42
40
39
61
60
2
1
JTAG Test Data Input
JTAG Test Mode Select
JTAG Test Data Output
JTAG Test Clock
Power Supply
PLL Power Supply
PLL Ground
Ground
Signal Name
Conexant
I/O
O
G
G
P
I
I
I
I
Test data input per IEEE Std 1149.1-1990. Used for loading
all serial instructions and data into internal test logic.
Sampled on the rising edge of TCK. TDI can be left
unconnected if it is not being used because it is pulled up
internally.
Test mode select input per IEEE Std 1149.1-1990. Internally
pulled-up input signal that controls the test-logic state
machine. Sampled on the rising edge of TCK. TMS can be left
unconnected if it is not being used because it is pulled up
internally.
Test data output per IEEE Std 1149.1-1990. Three-state
output used for reading all serial configuration and test data
from internal test logic. Updated on the falling edge of TCK.
Test clock input per IEEE Std 1149.1-1990. Used for all test
interface and internal test-logic operations. If unused, TCK
should be pulled low.
Power supply pins for the I/O buffers and core logic
functions.
5 VDC
Ground pins for the I/O buffers and core logic functions.
Must be held at the same potential as PLL_GND.
Dedicated supply pin for the PLL circuitry. Connect to VDD
externally.
Dedicated ground pin for the PLL circuitry. Must be held at
the same potential as GND.
5%.
Definition
Voice Pair Gain Framer
N8954DSC
Bt8954